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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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7b6023d9cf
Adding cudaipc{src,sink} element for CUDA IPC support.
Implementation note:
* For the communication between end points, Win32 named-pipe
and unix domain socket will be used on Windows and Linux respectively.
* cudaipcsink behaves as a server, and all GPU resources will be owned by
the server process and exported for other processes, then cudaipcsrc
(client) will import each exported handle.
* User can select IPC mode via "ipc-mode" property of cudaipcsink.
There are two IPC mode, one is "legacy" which uses legacy CUDA IPC
method and the other is "mmap" which uses CUDA virtual memory API
with OS's resource handle sharing method such as DuplicateHandle()
on Windows. The "mmap" mode might be better than "legacy" in terms
of stability since it relies on OS's resource management but
it would consume more GPU memory than "legacy" mode.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4510>
144 lines
4.9 KiB
C++
144 lines
4.9 KiB
C++
/* GStreamer
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* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include <gst/gst.h>
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#include <gst/cuda/gstcuda.h>
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#include "gstcudaipc.h"
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#include <memory>
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#include <vector>
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G_BEGIN_DECLS
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#define GST_TYPE_CUDA_IPC_CLIENT (gst_cuda_ipc_client_get_type())
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#define GST_CUDA_IPC_CLIENT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CUDA_IPC_CLIENT,GstCudaIpcClient))
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#define GST_CUDA_IPC_CLIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_CUDA_IPC_CLIENT,GstCudaIpcClientClass))
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#define GST_CUDA_IPC_CLIENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_CUDA_IPC_CLIENT,GstCudaIpcClientClass))
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#define GST_IS_CUDA_IPC_CLIENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CUDA_IPC_CLIENT))
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#define GST_IS_CUDA_IPC_CLIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_CUDA_IPC_CLIENT))
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struct GstCudaIpcClientConn;
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struct GstCudaIpcClientPrivate;
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enum GstCudaIpcIOMode
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{
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GST_CUDA_IPC_IO_COPY,
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GST_CUDA_IPC_IO_IMPORT,
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};
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#define GST_TYPE_CUDA_IPC_IO_MODE (gst_cuda_ipc_io_mode_get_type ())
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GType gst_cuda_ipc_io_mode_get_type (void);
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struct GstCudaIpcClient
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{
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GstObject parent;
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GstCudaContext *context;
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GstCudaStream *stream;
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GstCudaIpcIOMode io_mode;
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guint buffer_size;
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GstCudaIpcClientPrivate *priv;
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};
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struct GstCudaIpcClientClass
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{
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GstObjectClass parent_class;
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bool (*send_msg) (GstCudaIpcClient * client,
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GstCudaIpcClientConn * conn);
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bool (*wait_msg) (GstCudaIpcClient * client,
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GstCudaIpcClientConn * conn);
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void (*terminate) (GstCudaIpcClient * client);
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void (*invoke) (GstCudaIpcClient * client);
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void (*set_flushing) (GstCudaIpcClient * client,
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bool flushing);
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void (*loop) (GstCudaIpcClient * client);
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bool (*config) (GstCudaIpcClient * client,
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GstCudaPid pid,
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gboolean use_mmap);
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};
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GType gst_cuda_ipc_client_get_type (void);
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GstFlowReturn gst_cuda_ipc_client_get_sample (GstCudaIpcClient * client,
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GstSample ** sample);
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void gst_cuda_ipc_client_set_flushing (GstCudaIpcClient * client,
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bool flushing);
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GstCaps * gst_cuda_ipc_client_get_caps (GstCudaIpcClient * client);
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GstFlowReturn gst_cuda_ipc_client_run (GstCudaIpcClient * client);
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void gst_cuda_ipc_client_stop (GstCudaIpcClient * client);
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/* subclass methods */
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void gst_cuda_ipc_client_new_connection (GstCudaIpcClient * client,
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std::shared_ptr<GstCudaIpcClientConn> conn);
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void gst_cuda_ipc_client_send_msg_finish (GstCudaIpcClient * client,
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bool result);
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void gst_cuda_ipc_client_wait_msg_finish (GstCudaIpcClient * client,
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bool result);
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void gst_cuda_ipc_client_have_mmap_data (GstCudaIpcClient * client,
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GstClockTime pts,
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const GstCudaIpcMemLayout & layout,
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GstCaps * caps,
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GstCudaSharableHandle server_handle,
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GstCudaSharableHandle client_handle);
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void gst_cuda_ipc_client_on_idle (GstCudaIpcClient * client);
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void gst_cuda_ipc_client_abort (GstCudaIpcClient * client);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstCudaIpcClient, gst_object_unref)
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G_END_DECLS
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struct GstCudaIpcClientConn : public OVERLAPPED
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{
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GstCudaIpcClientConn ()
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{
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client_msg.resize (GST_CUDA_IPC_PKT_HEADER_SIZE);
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server_msg.resize (GST_CUDA_IPC_PKT_HEADER_SIZE);
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}
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virtual ~GstCudaIpcClientConn()
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{
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gst_clear_object (&context);
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}
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GstCudaIpcClient *client;
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GstCudaContext *context = nullptr;
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GstCudaIpcPktType type;
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std::vector<guint8> client_msg;
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std::vector<guint8> server_msg;
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};
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